Federal Register / Vol. 89, No. 35 / Wednesday, February 21, 2024 / Rules and Regulations 12951 

associations of producers for the 

handler’s eligible volume of milk. Milk 

under forward contract in compliance 

with the provisions of this part will be 

exempt from the minimum payment 

provisions that would apply to such 

milk pursuant to 7 CFR 1001.73, 

1005.73, 1006.73, 1007.73, 1030.73, 

1032.73, 1033.73, 1051.73, 1124.73, 

1126.73 and 1131.73 for the period of 

time covered by the contract. 

(b) No forward price contract may be 

entered into under the program after 

September 30, 2024, and no forward 

contract entered into under the program 

may extend beyond September 30, 2027. 

* * * * * 

Erin Morris, 

Associate Administrator, Agricultural 

Marketing Service. 

[FR Doc. 2024–03407 Filed 2–20–24; 8:45 am] 

BILLING CODE P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–2147; Project 

Identifier MCAI–2023–00663–E; Amendment 

39–22670; AD 2024–03–01] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Canada Corp. Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for all Pratt 

& Whitney Canada Corp. (P&WC) Model 

PW307A and PW307D engines. This AD 

is prompted by a root cause analysis of 

an event involving an uncontained 

failure of a high-pressure turbine (HPT) 

1st-stage disk that resulted in highenergy debris penetrating the engine 

cowling and an aborted takeoff. This AD 

requires removing from service and 

replacing certain HPT disks and also 

prohibits installing certain HPT disks on 

any engine, as specified in a Transport 

Canada AD, which is incorporated by 

reference. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 

DATES: This AD is effective March 27, 

2024. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of March 27, 2024. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–2147; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this final rule, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The address for 

Docket Operations is U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

Material Incorporated by Reference: 

• For service information identified 

in this final rule, contact Transport 

Canada, Transport Canada National 

Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario, K1A 0N5, 

Canada; phone: (888) 663–3639; email: 

TC.AirworthinessDirectives-Consignesde

navigabilite.TC@tc.gc.ca; website: 

tc.canada.ca/en/aviation. 

• You may view this service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 1200 District Avenue, 

Burlington, MA 01803. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. It is also 

available at regulations.gov under 

Docket No. FAA–2023–2147. 

FOR FURTHER INFORMATION CONTACT: 

Barbara Caufield, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; phone: 

(781) 238–7146; email: barbara.

caufield@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to all P&WC Model PW307A and 

PW307D engines. The NPRM published 

in the Federal Register on November 9, 

2023 (88 FR 77236). The NPRM was 

prompted by AD CF–2023–30, dated 

May 8, 2023 (Transport Canada AD CF– 

2023–30) (also referred to as the MCAI), 

issued by Transport Canada, which is 

the aviation authority for Canada. The 

MCAI states that on March 18, 2020, an 

Airbus Model A321–231 airplane, 

powered by International Aero Engines 

AG (IAE) Model V2533–A5 engines, 

experienced an uncontained HPT 1ststage disk failure that resulted in an 

aborted takeoff and high-energy debris 

penetrating the engine cowling. 

In response to the March 2020 

uncontained HPT 1st-stage disk failure, 

the FAA issued a series of ADs, 

including Emergency AD 2020–07–51, 

Amendment 39–21110 (85 FR 20402, 

April 13, 2020) (AD 2020–07–51). Since 

the FAA issued AD 2020–07–51, IAE 

determined that the failure of the 

V2533–A5 engine was due to an 

undetected subsurface material defect in 

the HPT 1st-stage disk that may affect 

the life of the part. In coordination with 

IAE, P&WC performed a records review 

and analysis of PW307A and PW307D 

engine parts made of similar material 

and identified additional affected HPT 

1st and 2nd-stage disks, installed on 

PW307A and PW307D engines. These 

additional HPT disks may have a 

material defect that could reduce the life 

of the part and must be removed from 

service. 

In the NPRM, the FAA proposed to 

require replacing certain HPT disks and 

prohibiting the installation of certain 

HPT disks on any engine, as specified 

in the MCAI. The FAA is issuing this 

AD to address the unsafe condition on 

these products. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–2147. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received no comments on 

the NPRM or on the determination of 

the costs. 

Conclusion 

These products have been approved 

by the aviation authority of another 

country and are approved for operation 

in the United States. Pursuant to the 

FAA’s bilateral agreement with this 

State of Design Authority, it has notified 

the FAA of the unsafe condition 

described in the MCAI referenced 

above. The FAA reviewed the relevant 

data and determined that air safety 

requires adopting this AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on these 

products. Except for minor editorial 

changes, this AD is adopted as proposed 

in the NPRM. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Transport Canada 

AD CF–2023–30, which identifies the 

affected HPT disks and specifies 

procedures for replacement. This 

service information is reasonably 

available because the interested parties 

have access to it through their normal 

course of business or by the means 

identified in ADDRESSES. 

Costs of Compliance 

The FAA estimates that this AD 

affects 63 engines installed on airplanes 

of U.S. registry. 

The FAA estimates the following 

costs to comply with this AD: 


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12952 Federal Register / Vol. 89, No. 35 / Wednesday, February 21, 2024 / Rules and Regulations 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on 

U.S. 

operators 

Remove affected HPT 1st or 2nd stage disk ....... 8 work-hours × $85 per hour = $680 ................... $136,400 $137,080 $8,636,040 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some of the 

costs of this AD may be covered under 

warranty, thereby reducing the cost 

impact on affected operators. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 

substantial direct effect on the States, on 

the relationship between the national 

government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Will not affect intrastate aviation 

in Alaska, and 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

2024–03–01 Pratt & Whitney Canada Corp.: 

Amendment 39–22670; Docket No. 

FAA–2023–2147; Project Identifier 

MCAI–2023–00663–E. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective March 27, 2024. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Pratt & Whitney Canada 

Corp. Model PW307A and PW307D engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7250, Turbine Section. 

(e) Unsafe Condition 

This AD was prompted by a root cause 

analysis of an event involving an 

International Aero Engines AG Model 

V2533–A5 engine, which experienced an 

uncontained failure of a high-pressure 

turbine (HPT) 1st-stage disk that resulted in 

high-energy debris penetrating the engine 

cowling. The FAA is issuing this AD to 

prevent failure of the HPT 1st and 2nd-stage 

disks. The unsafe condition, if not addressed, 

could result in uncontained HPT disk failure, 

damage to the engine, damage to the airplane, 

and loss of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified in paragraphs (h) and 

(i) of this AD: Perform all required actions 

within the compliance times specified in, 

and in accordance with, Transport Canada 

AD CF–2023–30, dated May 8, 2023 

(Transport Canada AD CF–2023–30). 

(h) Exceptions To Transport Canada AD CF– 

2023–30 

(1) Where Transport Canada AD CF–2023– 

30 requires compliance from its effective 

date, this AD requires using the effective date 

of this AD. 

(2) Where paragraph A. of Transport 

Canada AD CF–2023–30 specifies ‘‘Before 31 

January 2027,’’ replace that text with ‘‘Within 

36 months after the effective date of this 

AD.’’ 

(3) Where paragraph B. of Transport 

Canada AD CF–2023–30 specifies ‘‘At the 

next opportunity, when the affected engine is 

disassembled and access is available to the 

HPT disk, remove any affected HPT disk 

listed in Table 2 or Table 4 below and replace 

the affected HPT disk with a serviceable 

part,’’ replace that text with ‘‘For any engine 

with an installed HPT disk listed in Table 2 

or Table 4 [of Transport Canada AD CF– 

2023–30], at the next piece-part exposure, 

remove the affected HPT disk from service 

and replace with a serviceable part.’’ 

(i) No Reporting Requirement 

Although the service information 

referenced in Transport Canada AD CF– 

2023–30 specifies to submit certain 

information to the manufacturer, this AD 

does not include that requirement. 

(j) Definitions 

(1) For the purpose of this AD, ‘‘piece-part 

exposure’’ is when the affected part is 

removed from the engine and completely 

disassembled. 

(2) For the purpose of this AD, a 

‘‘serviceable part’’ is any HPT disk that is not 

identified in Tables 1 through 4 of Transport 

Canada AD CF–2023–30. 

(k) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, International Validation 

Branch, FAA, has the authority to approve 

AMOCs for this AD, if requested using the 

procedures found in 14 CFR 39.19. In 

accordance with 14 CFR 39.19, send your 

request to your principal inspector or local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, send it to the attention of the person 

identified in paragraph (l) of this AD and 

email to: ANE-AD-AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(l) Additional Information 

For more information about this AD, 

contact Barbara Caufield, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 


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Federal Register / Vol. 89, No. 35 / Wednesday, February 21, 2024 / Rules and Regulations 12953 

410, Westbury, NY 11590; phone: (781) 238– 

7146; email: barbara.caufield@faa.gov. 

(m) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the service information listed in this 

paragraph under 5 U.S.C. 552(a) and 1 CFR 

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless the AD specifies otherwise. 

(i) Transport Canada AD CF–2023–30, 

dated May 8, 2023. 

(ii) [Reserved] 

(3) For Transport Canada AD CF–2023–30, 

contact Transport Canada, Transport Canada 

National Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario K1A 0N5, Canada; 

phone: (888) 663–3639; email: 

TC.AirworthinessDirectives-Consignesde

navigabilite.TC@tc.gc.ca; website: 

tc.canada.ca/en/aviation. 

(4) You may view this service information 

at the FAA, Airworthiness Products Section, 

Operational Safety Branch, 1200 District 

Avenue, Burlington, MA 01803. For 

information on the availability of this 

material at the FAA, call (817) 222–5110. 

(5) You may view this material at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

visit www.archives.gov/federal-register/cfr/ 

ibr-locations or email fr.inspection@nara.gov. 

Issued on January 31, 2024. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–03442 Filed 2–20–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2023–1147; Airspace 

Docket No. 22–AAL–55] 

RIN 2120–AA66 

Amendment of Alaskan Very High 

Frequency Omnidirectional Range 

(VOR) Federal Airway V–333 in the 

Vicinity of Shishmaref, AK, and 

Revocation of Alaskan VOR Federal 

Airway V–401 in the Vicinity of Ambler, 

AK 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: This action amends Alaskan 

Very High Frequency Omnidirectional 

Range (VOR) Federal Airway V–333 and 

revokes Alaskan VOR Federal Airway 

V–401. The FAA is taking this action 

due to the pending decommissioning of 

the Shishmaref, AK, and Ambler, AK, 

Nondirectional Radio Beacons (NDB). 

The identifier V–333 is also used as an 

identifier for Domestic VOR Federal 

Airway V–333 in the vicinity of Rome, 

GA. The identifier V–401 is also used as 

an identifier for Domestic VOR Federal 

Airway V–401 in the vicinity of 

Worland, WY. This airspace action only 

pertains to the Alaskan V–333 and V– 

401. The V–333 near Rome, GA and V– 

401 near Worland, WY, are not affected 

by this airspace action. 

DATES: Effective date 0901 UTC, May 16, 

2024. The Director of the Federal 

Register approves this incorporation by 

reference action under 1 CFR part 51, 

subject to the annual revision of FAA 

Order JO 7400.11 and publication of 

conforming amendments. 

ADDRESSES: A copy of the Notice of 

Proposed Rulemaking (NPRM), all 

comments received, this final rule, and 

all background material may be viewed 

online at www.regulations.gov using the 

FAA Docket number. Electronic 

retrieval help and guidelines are 

available on the website. It is available 

24 hours each day, 365 days each year. 

FAA Order JO 7400.11H, Airspace 

Designations and Reporting Points, and 

subsequent amendments can be viewed 

online at www.faa.gov/air_traffic/ 

publications/. You may also contact the 

Rules and Regulations Group, Office of 

Policy, Federal Aviation 

Administration, 800 Independence 

Avenue SW, Washington, DC 20591; 

telephone: (202) 267–8783. 

FOR FURTHER INFORMATION CONTACT: 

Steven Roff, Rules and Regulations 

Group, Office of Policy, Federal 

Aviation Administration, 800 

Independence Avenue SW, Washington, 

DC 20591; telephone: (202) 267–8783. 

SUPPLEMENTARY INFORMATION: 

Authority for This Rulemaking 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the United States Code. 

Subtitle I, Section 106 describes the 

authority of the FAA Administrator. 

Subtitle VII, Aviation Programs, 

describes in more detail the scope of the 

agency’s authority. This rulemaking is 

promulgated under the authority 

described in Subtitle VII, Part A, 

Subpart I, Section 40103. Under that 

section, the FAA is charged with 

prescribing regulations to assign the use 

of the airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 

scope of that authority as it modifies the 

Air Traffic Service (ATS) route structure 

as necessary to preserve the safe and 

efficient flow of air traffic within the 

National Airspace System. 

History 

The FAA published a NPRM for 

Docket No. FAA 2023–1147 in the 

Federal Register (88 FR 54251; August 

10, 2023), proposing to amend V–333 

and to revoke V–401 in Alaska. 

Interested parties were invited to 

participate in this rulemaking effort by 

submitting written comments on the 

proposal to the FAA. No comments 

were received. 

Incorporation by Reference 

Alaskan VOR Federal airways are 

published in paragraph 6010 of FAA 

Order JO 7400.11, Airspace 

Designations and Reporting Points, 

which is incorporated by reference in 14 

CFR 71.1 on an annual basis. This 

document amends the current version of 

that order, FAA Order JO 7400.11H, 

dated August 11, 2023, and effective 

September 15, 2023. FAA Order JO 

7400.11H is publicly available as listed 

in the ADDRESSES section of this 

document. These amendments will be 

published in the next update to FAA 

Order JO 7400.11. 

FAA Order JO 7400.11H lists Class A, 

B, C, D, and E airspace areas, air traffic 

service routes, and reporting points. 

The Rule 

This action amends 14 CFR part 71 by 

amending Alaskan VOR Federal Airway 

V–333 and revoking Alaskan VOR 

Federal Airway V–401, in its entirety, in 

the state of Alaska. 

V–333: Prior to this final rule, Alaskan 

VOR Federal Airway V–333 extended 

between the Hooper Bay, AK, VOR/ 

Distance Measuring Equipment (DME), 

the Nome, AK, VOR/DME, and the 

Shishmaref, AK, Nondirectional Radio 

Beacon (NBD). The airway segment 

between the Nome VOR/DME and the 

Shishmaref NBD is removed. As 

amended, the airway is now changed to 

extend between the Hooper Bay VOR/ 

DME and the Nome VOR/DME. 

V–401: Prior to this final rule, Alaskan 

VOR Federal Airway V–401 extended 

between the Ambler, AK, NDB, the 

Kotzebue, AK, VOR/DME, and the 

Shishmaref, AK, NDB. The airway is 

removed in its entirety. 

The identifier V–333 is also used as 

an identifier for Domestic VOR Federal 

Airway V–333 in the vicinity of Rome, 

GA. The identifier V–401 is also used as 

an identifier for Domestic VOR Federal 

Airway V–401 in the vicinity of 

Worland, WY. This airspace action only 

pertains to the Alaskan V–333 and V– 

401. The V–333 near Rome, GA and V– 

401 near Worland, WY, are not affected 

by this airspace action. 


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